Can anyone help me with these math questions?

Test Preparation SAT Preparation
1

<p>1) 6x+3(>=)a
if the equalitiy above is true for the constant a, which of the following could be value of X?</p>

<p>a) (a/6)
b) (a/6)-1
c) (a/6)-3
d) (a-4)/6
e) (a-5)/6</p>

<p>THNX............</p>

2

<p>Let’s pick a value for a, say a=15. Then x>=2. Now let’s plug 15 into the answer choices:</p>

<p>(A) 2.5
(B) 1.5
(C) -1.5
(D) 1.833…
(E) 1.666…</p>

<p>Choice (A) is the answer since it is the only one greater than or equal to 2.</p>

<p>An algebraic solution:</p>

<p>6x+3(>=)a
6x>=a-3
x>=a/6-1/2</p>

<p>Clearly a/6>=a/6-1/2, so the answer is choice (A).</p>